A planet's atmosphere is a layer of different gases surrounding it.

The wire is heated by a current flowing through it and cooled by the gas surrounding it.

On the cosmic scale, indeed, the Phoenix Nebula is a tiny thing-a tenuous shell of gas surrounding a single star.

The clouds of gas surrounding the star resemble the swirling patterns van Gogh used in this painting.

It is class T, which means it is mostly helium and heavier gases surrounding a rocky core.

Atmosphere, the mass of gases surrounding a planet or any other celestial object.

Most astronomers think that the energy comes from a disc of gases surrounding a very massive black hole.

In order to keep rising or sinking in the star the displaced element must not be able to become the same density as the gas surrounding it.

"It's a ball of gas surrounding a chunk of metallic rock."

The planets, he proposed, had congealed from a swirling cloud of gas and dust surrounding the sun.